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Choice of die gap

2021-11-15 16:48:17
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The gap of the die is related to the type and thickness of the material being punched. Unreasonable clearance can cause the following problems:


(1) If the gap is too large, the burr of the stamped workpiece will be relatively large, and the stamping quality will be poor. If the gap is too small, although the punching quality is good, the wear of the die is serious, which greatly reduces the service life of the die and easily causes the punch to break.


(2) If the gap is too large or too small, it is easy to cause adhesion on the punch material, which will cause the material to be tapered during punching. If the clearance is too small, it is easy to form a vacuum between the bottom surface of the punch and the sheet, which will cause the waste to bounce.



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(3) Reasonable clearance can prolong the life of the mold, the discharge effect is good, the burr and flanging are reduced, the plate is kept clean, the hole diameter is consistent and the plate will not be scratched, the number of sharpening is reduced, the plate is kept straight, and the punching positioning is accurate.


CNC punch mould, CNC punch tool, CNC mould


Please refer to the chart to select the mold clearance (the data in the table is in percentage)



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